I've found reference to two suits, but I can only locate the actual complaints on one. Not sure what is going on with that.
One is Taylor vs. Kool Smiles in Lexington, this on is on file with the courts.
The second on was referred to in an online news papers:
Jerrisha Coomer v Kool Smiles, see it listed here. This one I've not located just yet and found no other mention to it other than in the online paper.
If anyone has info, please email me with the info.